Open Mail for me
When you .
When you receive an email message sent to a unique, random address, you can do any of the following:
Reply to the message: The unique, random address where you received the message is used by default when you reply.
View and update your Hide My Email settings: Click Settings in the banner shown across the top of the message, or Control-click Hide My Email in the To field, then choose Go to Hide My Email Settings.